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What would be the margin of error

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A 95% confidence interval (using the conservative value for the degrees of freedom) for μ1 - μ2, based on two independent samples of sizes 18 and 20, respectively, gives us (45.6, 56.7).

What would be the margin of error for a 99% confidence interval for μ1 - μ2?

Reference no: EM132173843

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